Abstract
In the quasiharmonic approximation, the phonon Green's function of crystal deformation is determined and the dependence of the frequency on the deformation is found. The results obtained are applied to the description of isothermal and adiabatic elastic moduli.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 36–39, October, 1982.
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Davydov, S.Y., Margolin, V.I. Deformation of quasiharmonic crystals. Soviet Physics Journal 25, 902–905 (1982). https://doi.org/10.1007/BF00891662
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DOI: https://doi.org/10.1007/BF00891662